Juju Charms Collection
neutron-api package

  1. Bug #1512407
  2. Comment #12

Comment 12 for bug 1512407

Revision history for this message
Larry Michel (lmic) wrote :

It turns out the vxlan offloading does get enabled. One host did not show it getting enabled in the syslog. But when I went to try a test on the 2nd compute host which I had not checked, I could see expecting log message about offloading getting enabled:

Nov 23 20:19:59 maero kernel: [18302.839361] be2net 0000:08:00.1: Only one UDP port supported for VxLAN offloads
Nov 23 20:19:59 maero kernel: [18302.839367] be2net 0000:08:00.1: Disabling VxLAN offloads

https://pastebin.canonical.com/144654/

But I am still a bit confused about the MTU size change. I now see that the MTU size for GRE was done specifically to address the possibility of fragmentation and AFAICT the document states that instance-mtu ought to be less than network-device-mtu. Also, I would expect a small difference between the GRE and VXLAN headers... so need to dig into this further.